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(No Model.) 3 Sheets-Sheet 1. J. GRANT.

MACHINE POB MAKING TIMBER RANGERS. 110.445,149. Patented Jan. 20,1891.

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nu: noms paens cn., Fumo-urna., msnwamn, u. c.

(No Modef) 3 Sheets-Sheet 2. J. GRANT. MACHINE POR MAKING TIMBERRANGERS.

(No Model.) f

J. GRANT.

MAGII'INE EOE MAKING TIMBER RANGERS.

Patented Jan. 20, 1891.

3 Sheets-Sheet 3.

f1 i /L E E l 'me vonms PETERS co., vnomuwo., msmwwn, n. c.

llnrrnn STATES/,PATENT OFFICE.

.IOIIN GRANT, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GRANT MANUFACTURINGCOMPANY, OF SAME PLACE.

MACHINE FOR MAKING TIMBER-HANGERS.

SPECIFICATON forming part of Letters Patent No. 445,149, dated January20, 1892i.

Application tiled April 17, 1890. Serial No. 348,362. (No modelJ To allwhom t may concern: of Fig. 18. Fig. 2O is an end view of the parts Beit known that I, JOHN GRANT, of Chishown in Fig. IS. Fig. 2l is a planview of cago, in the county of Cook and State of Illithe forming-diesshown in Fig. 18 and a pronois, have invented certa-in new and usefuljection on the frame which actuates said dies. 55

5 Improvements in Metal-Bending Machines; The main frame of the machineillustrated and I do hereby declare that the following is consists of abed-plate A, provided with legs a full, clear, and exact descriptionthereof, refor standards a5 a5, sustaining 1t in horizontal erence beinghad to the accompanying drawposition. The bed-plate A is provided at itsings, and to the letters of reference marked side margins withupwardly-extending Iianges 6o io thereon, which form a part of thisspecifica- A A', to the upper edges of which is secured tion. a flat topplate A2, the flanged bedplate and This invention relates to machinesfor maktop plate together forming a rectangular ing stirrup-irons ortimber-hangers, such as guide-passage, Fig. 2, open at both ends. areused for connecting ceiling-joists with the Vithin said guide-passage islocated a slid- 65 I5 timbers which sustain the same. ing plate orcarriage B, which is given a lon- A The invention consists in thematters heregitudinal reciprocatory motion by the device inafterdescribed, and pointed out in the aphereinafter described. In theparticular conpended claims. struction shown the carriage Bis providedat In the accompanying drawings, illustrating its side margins withdownwardly-extending 7o 2o a machine embodying my invention, Figureflanges b b, Fig. 3, which rest upon the bed- 1 1s a side view of themachine ready for inplate A, thereby lesseniug the area of the sertionof the blank or bar. Fig. 2 is an end parts in frictional contact. Saidcarriage is elevation thereof, showing machine in posialso provided inits rear or inner part with tion after completion of the hanger. Fig. 3upwardly-extending flanges b b', which rest 75 25 is acentrallongitudinal section thereof,taken and slide in contact with thetopplate A2, upon line 3 3 of Fig. 2. Fig. 4 is a plan thereand therebyhold the carriage from being of, showing machine in same position as inlifted above the bed-plate during the opera- Fig. l. Fig. 5 is anenlarged detail section tion of the machine. Reciprocatory motion takenupon line 5 5 of Fig. 2. Fig. 6 is an enis given to the carriage bymeans of a crank- So 3o larged sectional plan view showing workingdiskC, which is mounted on a shaft C at table nearly atthelimitof itsbackward niovethe rear end of the machine, and is conment, taken uponline 6 6 of Fig. Fig. 7 is nccted with the said carriage by means of a adetail section taken upon line 7 7 of Fig. G. pitman C2. Said shaft C isdriven from a Fig. S is a still further enlarged section of pulley-shaftI) by means of gear-wheels D S5 35 movable clamping device. Fig. 9 is asec- C3 on said shaftsDand C,said shaftD being tional plan view of same,taken upon line 9 9 provided with belt-pulleys d d', by means of of Fig.8. Fig. l0 is a detail sectional view which motion is communicated tothe workof device for operating the movable forminging parts of themachine. dies. Fig. ll is a sectional plan viewon line By reference toFig. l2- it will be seen that 9o 4o ll ll of Fig. l0. Fig. lis aperspective view the stirrup iron or hanger consists of a piece of afinished hanger made by the machine. of bar-iron of great-er width thanthickness, Fig.13isanenlargeddetailsection showingnand which is benttwice at right angles near ished hanger and parts of the machine enitsmiddle to form a loop a and two parallel gaged therewith. Fig. l-l isadetail section on arms a a', each of which hasa quarter-twist 9 5 45line la laof Figl. Figl isadetail section a2 a2, bringing the flat facesof the upper on line l5 l5 of Figa-13. Fig. 16 illustrates a parts ofthe arms in the same plane with the modication of t-he construction ofthe clamploop a. The said arms at their upper ends ing device. Fig. 17is a detail section on line are each provided withtwo right-angled bendsI7 17 of Fig. 16. Fig. lb illustrates a modia3 a4, giving a hooked formthereto. The Ioo 5o cation of the construction of the forminghanger,constructed as described, is suspenddies. Fig. 19 is a detail section online 19 19 ed from the top of a beam by means of its hooked ends andsupports a second beam lo ing the same widthas the said loop d of thehanger.

E E are two bending-rollers mounted upon studs e e, supported upon thetop plate A2, and extending downwardly therefrom at either side of thepath of the form-block, said rollers being located at some distancelater ally from the form-block.

E E indicate another pair of bending-rollers mounted on vertical studs cc', which are also supported upon the top plate A2, said rollers EEbeing arranged at opposite sides of the-path of the form-block at adistance from the latter equal to the thickness of the bar of metal tobe operated upon. The lower end faces of the rollers E E E E are locatedadjacent to the fiat top surface of the carriage B, which slides freelybeneath the same. The said carriage 13 is reciprocated through suchdistance that the rear or inner end of the form-block l5 is carriedout-wardly past the rollers E E and inwardly past the rollers Ef E', andin making the central bend in the bar'the'latter is placed acrossV theend of the form-block when it is at the outward limit of its movementwith the center of the bar resting in contact with the end face of theformblock, and the loop is formed by the conjoint action of said rollersand the form-block in the rearward or inward movement of the carriage.During such movement of the carriage the end portions of the bar orblank are first brought against the rollers E E, by which the ends ofthe bar are bent to an angular position relatively to the sides of theform-block, and as soon as the rear end of the form-block reaches andpasses between the rollers E E the end portions of the bar are pressedfiat against the sides of the form-block, thereby making tworight-angled bends in the bar.

In order to prevent displacement of the blank during the movement of thecarriage and form-block in the manner described, a clamp device ispreferably employed to hold or clamp the middle part of the bar againstthe end face ofV the form-block. This clamp device :is herein shown inFigs. l to 9 made as follows: -F is a metal block or bar bolted to thetop surface of the carriage at the rear of and in line with thefornrbloek, said bar being provided at its end adjacent to theform-block, with two guide-arms ff, between which slides a longitudinalclamping-jaw F, Figs. 8 and 9, said clamping-jaw being provided with aworking-face opposite and parallel with the inner end of the form-block,and preferably of the same width as the said end face of the form-block.In connection with such clamping-jaw a device is provided for throwingand holding the same against the blank, so as to clamp the latterbetween the clamping-jaw and the end of the formblock, the sameconsisting, as herein shown, of a rock-shaft F2, mounted in the castingF, and provided with an eccentric F3, arranged to engage theclamping-jaw. F in such manner as to move the same toward and from theform-block when the rock-shaft is turned, said rock-shaft being providedat one end with a lever f', by which it may be rotated for tighteningand loosening the clamping-jaw. In

the particular construction of the parts herein illustrated theclamping-jaw is held in place vertically by contact with the guide-armsff, and is held from lateral displacement by means of two parallel armsf2f2, which ex tend rearwardly from the body of the clamping-jaw andengage the opposite parallel side faces of the casting F, Fig. 9. Therock-shaft F2 is herein shown as arranged vertically and mounted at itsends in the guide-arms ff, the eccentric F3 being located at the middleof the rock-shaft in a rectangular recess f3, formed in the bodyof theclamping-jaw, said jaw being provided with slots f'lfi, through whichthe rock-shaft passes at either side of the said recess f3. Theengagement of the eccentric with opposite sides of the said recess f3,as shown in Fig. 9, gives positive movement to the clampin gj awduringrboth its forward and backward movement and holds it at all timespositively in position. The opposing faces of the form-block in theclamping-jaw F are preferably provided with lining-plates B2 F4, whichare conveniently held in position by dovetailed `tongues engagingcorresponding` grooves in said parts. By using thicker or thinnerlining-plates provision may be made for operating upon metal bars orblanks of greater or less thickness, as desired.

The leverf may be moved by hand to effect the engagement of theclamp-jaw with and its disengagement from the blank. As a means ofinsuring the clamping of the blank during the bending operation, I soarrange the leverf that it will stand parallel with the path of thecarriage when the clamp-jaws are closed, and place the said lever abovethe level of the top of the form-block, so that it will enter and passthrough a longitudinal groove Ai", formed in the lower face of the top Yplate A2, Fig. 8, for the reception of said lever YVduring the back andforward movement of the carriage. Y In a construction of this kind thelever f will be actuated to automatically close the clamp-jaw againstthe blank, and said lever may be moved to release the blank either byhand or by an automatic actuating device. W'hen actuated by hand thelever may be thrown around to release the jaw by a hand tool; but asimilar movement may be automatically accomplished by means of a springsuitably applied for the purpose. In the drawings, Fig. 8, f6 indicatesa spiral IIO spring encircling the roek-shaft F2 and connected with saidshaft and with the casting F, said spring being so arranged as to tendto hold the eccentric in position to retract the clamp-jaw.

In Figs. 1G and 17 I have shown another device for automaticallyactuating the clamppin F. In this instance the clam p-jaw is pro videdwith two guide-rods]7 f7, which slide in the casting F, and springs F513are applied to said rods in such manner as to retract the clamp-jaw ordraw it toward the said casting F. Fi is a cam-plate which is adapted toswing on a transverse pivot f, secured in the casting F, said cam-platebeing adapted to engage at its free end with the rear or inner face ofthe jaw in such mannner as to advance the jaw when the cam-plate isdepressed. A spring FT is applied to lift said camplate, and the latteris so arranged that when in its elevated position its upper surfacestands above the level of the top of the form-block and in position toengage the top plate A2. In the operation of the machine when thus made,when the blank is placed across the rear end of the form-block and thecarriage begins its backward movement, the cam-plate F will strike thetop plate A?, and will be thrust downwardly thereby so as to advance aclamp-jaw and clamp the blank. \\"hen the carriage returns to itsoriginal position, however, the cam-plate will rise under the action ofthe spring FT as soon as it is free from the top plate, and theclamp-jaw will thereby become automaticallly released from the blank.

The form-block 3 may be cast integral with the carriage B, or otherwisepermanently secured thereto, in case the machine is in tended for makingonly one size of hanger. Preferably, however, said form-block isremovably secured to the carriage, whereby forni-blocks of differentwidths may be employed when it is desired to vary the size of the loop aof the hanger. A device for detachably securing the form-block to thecarriage herein shown consists of heavy integral lugs or posts B3 B",extending upwardly from the top surface of the carriage and passingthrough sockets or recesses b2 b3 in the form-block, the latter beingheld downwardly in place by means of screws h4 b1 passing through theform-block and into the carriage. The recess b2 is conveniently formednear the rear or inner end of the form-block, while the recess b3 hasthe form of a notch in the outeror front end of the said form-block.

The means employed for making the quarter-twists a2 a2 in the bar orblank will now be described. Said twists are made, generally speaking,by the conjoint action of two laterally-projecting forming-dies G G,extending laterally outward from the upper part of the form-block, andtwo cam-arms II Il, which are pivotally supported in the carriage belowthe form-block, and are adapted to rise toward the forming-dies G G inthe act of making the twist in the bar. Said forming-dies are beveled orinclined on their rear and under surfaces to correspond generally withthe inclination or curvature of the iinlished hanger at a point adjacentto the twist.

The cam-arms II H are similarly beveled or inclined upon their upper andouter surfaces 71, h to correspond with the curved surface of thehanger. Said beveled surfaces h hare furthermore arranged eccentrieallywith the pivots h 71. ot' the cam-arms, as clearly shown in Fig. 7. Saidcam-arms I'I swing through a distance approximately equal to a quarterof a rotation during the operation of forming the twists in the hanger,the curvature of the working-faces 7L h of the cam-arms being such thatwhen said cam-arms are swung downwardly and are out of act-ion thecamsnrfaces are entirely below the level of the top of the carriage, sothat the ends of the bar or blank may swing freely over the camarms whensaid ends of the blank are brought against the sides of the formblock inthe preliminary bending of the saine. Said calnfaces are so shaped,furthermore, that when the cam-arms are swung upwardly and rearwardlythey will come approximately parallel to the inclined under surface ofthe formingdies G G, thereby acting, in connection with said dies, togive the desired shape or twist to the blank. It will of course beunderstood that the working-faces h 7L of the calnarms' are inclinedinwardly and downwardly toward the form-block, so that their outermargins are highest, and thereby act to bend or carry upwardly the outermargins of the blank,as is clearly shown in the sectional view, Fig. 13.Said cam-surfaces 7L 7L terminate in flat surfaces 7b2 h2, which, whenthe earn-arms H H are swung upwardly to the upward limit of theirmovement, are horizontal and stand at a distance below the under surfaceof the top plate A2 of the machine equal to the thickness of the metalblank, Fig. 13. These ilat surfaces h2 h2 serve to bring the dat partsof the hanger above the twists a2 a2 in the same plane with the inneredge of the loop a, so that when the hooks are engaged with the timberthe loop of the hanger will rest against the side of the timber bothabove and below the twists therein.

In order to provide for working upon metal of different thicknesses,removable blocks h3 h3 are secured to the cam-arms, so as to form thefiat surfaces h2 7b2, which blocks may beA removed and replaced byothers of greater or less thickness, as necessary in operating themachine with thickerorthinner blanks. The said cam-arms H II are liftedfor the purpose of forming the twist in the blank during the rearward orinward movement of the carriage, by contact of a roller H upon thebed-plate A with the said cam-arms, the top of said roller beingarranged on a level with the top of the bed plate, so that the rollerwill lift the arms into a horizontal position and the lat-ter will besustained in snch position du r IOO IIO

ing the free inward movement of thezcarriage by resting upon saidbed-plate. The roller II is arranged beneath the forward end of the topplate A2, so that when the cam-arms are thrown upwardly the flatsurfaces h2 h2 thereof will come beneath the top plate and will therebybring the parts of the blank adjacent to the twists therein in the sameplane with each other and with the inner edge of the loop a. Flanges h4h4 at the inner edges of the cam-faces h h are desirably employed toengage the inner edges of the blank, and thereby prevent the same frombecoming caught between the cam-arms and the formblock as the cam-armsrise.

The bending-rollers E E, hereinbefore described, aid in the bending ofthe blank by acting against the outer edges thereof to hold the sameagainst the form-block. Said rollers E for this purpose are located at adistance from the sides of the form-block equal to the width of theblank. During the inward movement of the carriage, after the cam-armshave been lifted to form the twists in the blank, the end portions ofthe blank adjacent to the twists will be confined above and below by thecam-arms and top plate and at their inner and outer edges by contactwith the formblock and rollers E E, Fig. 15, so that these portions ofthe blank will be closely confined or held during the inward movement ofthe carriage.

For the purpose of allowing adjustment of the rollers E E toward andfrom the formblock in operating upon wider or narrower blanks thepivot-studs e e of said rollers are mounted in blocks E2 E2, Fig. l5,secured to the front edge of the top plate A2 by adjust= able attachingdevices adapted for conveniently shifting the position of said blockshorizontally. As herein shown, the top plate A2 is provided with aT-groove A2, Fig. 13, in which fit and slide T-shaped projections e2 e2upon the said blocks E2 E2, and an oppositelyscrew-threaded shaft E2isengaged with the projections of both blocks, said shaft having a squaredend by which it may be conveniently turned for adjusting the blocks. Asan additional means of rigidly securing' in place the said blocks E2 E2after the same have been adjusted by means of the shaft, bolts e2 e2,Fig. 5, having heads engaging the T-slot A3 A3, are inserted through thesaid blocks and provided with nuts by which the blocks. may be clampedagainst the end of the top plate.

The forming-dies G G, instead of being rigidly attached to theform-block, are preferably mounted thereon, so that they may be swunginwardly to allow the nished hanger to be `lifted from the form-block.For the purpose stated said dies G G may be mounted in any one of agreat variety of ways. One desirable construction in said dies is hereinshown, Figs. l0 and ll, which is as follows: Said dies are pivoted attheir inner ends upon. vertical pivots g g, secured in the form-block,the dies being arranged with their upper surfaces flush with the top ofthe form-block, which latter is provided with recesses G G, adapted toreceive the dies when the latter are swung about the pivots g g.

G2 is a gear-pinion mounted upon a vertical shaft g between the pivots gg of the dies,y and intermeshing with gear-segments g2 g2, formed uponthe inner end of the dies, concentric with the ,pivots g g, in themanner illustrated, Fig. 11. By reason of the engagement of both of thearms with the pinion G2 when the shaft g is rotated said arms are turnedor moved in opposite directions so that one arm swings toward the outerend and the other arm toward the inner end of the formblock when saidarms are swung inwardlyin to their folded position, as clearly shown inthe drawings. To the upper end of the shaft g is secured anactuating-lever g3, which may be moved either by hand or automaticallyby contact with a part of the machine to turn thedies G G. As hereinshown, the lever g2 is adapted to enter the groove A5 in the undersurface of the top plate, and said lever is so arranged with referenceto the dies that the latter will be held in their extended or operativeposition when the lever is within the groove. The lever may be turned byhand to close the dies inwardly, and thus permit the iinished hanger tobe lifted from the form-block; but in order to make the opera. tion ofthese parts entirely automatic a spring g4 may be applied to turn theshaft g in a direction to close the dies. Such spring is shown as lnadeof the form of a coilsurrounding the shaft g and connected at one endwith the shaft andat its opposite end with the form-block.

In Figs. 18, 19, and 2O I have shown another construction in means foractuating the forming-dies G G. In this instance G2 G3 are tworock-shafts mounted in the form-block B parallel with each other andwith the sides of the form-block. The dies G G are rigidly secured tothe rock-shafts, so as to turn with the latter, said dies in thisconstruction swinging in a plane atright angles to the sides of theform-block and being adapted to move through a quarter of a circle orfrom a position standing horizontally out from the sides of theform-block to a vertical position extending upwardly from the top of theform-block. rIhe rock-shafts G3 G3 extend at their ends outwardly pastthe end of the form-block, and are there provided with rigid arms g5 g5,to which are connected the opposite ends of a spring G", acting to turnthe rock-shaft in opposite directions and to hold the dies in theirclosed or vertical position. In a construction of this kind the dies G Gare held outwardly or in position for operation by contact of theirupper surfaces with the under surface of the top plate A2, said diesbeing located beneath said top plate at the time the upward pressurecornes thereon in the act of bending or forming the IOO IIO

hanger. The dies are opened or spread by means of a wedge-shaped orpointed projection N, located on the top-plate A2 above the form-block,the point of the projection entering between the dies and forcing thesame apart as the carriage moves inwardly or rearwardly, as clearlyshown in Fig. 2l.

The construction in the parts by which the double bends d3 al of thehanger are formed will now be described. Generally speaking, the saidbends are formed by bending the end portions ot the blank over surfacesor dies, Figs. I and 13, attached toor tormedon the end of the top plateA2 and having flat vertical 'faces l A and horizontal top surfaces A*uA7 by means of bending-levers I I, hinged to the cam-arms Il ll, andother bendingarms J J, which are hinged to the bendinglevers I I, thebending-levers I I being arranged to press the blank against the sur-`faces l A, while the bending-arms J J are adapted to bring the ends ofthe blank against the horizontal surfaces AIM A". To first describe theconstruction and operation of the bending-levers I I, said levers arehinged by means of horizontal pivots t' t to the outer or forward endsof the cam-arms ll ll, the said bending-levers being provided adjacentto the said cam-arms with fiat working-faces t" t', adapted to come intoposition parallel with the vertical faces AGAG of the top plate when thesaid bending-levers are swung upwardly into vertical position or atright angles to the cam-arms, the said bending-surface being extendedoutwardly past or above the said surface t '17, for the purposehereinafter described. The said bending-levers I are furthermoreprovided with arms I I', extending from the lower or inner sides of thepivots yl', and adapted for engagement with a cam or wiper K, which ismounted upon a horizontal shaft K', located beneath the bed-plate ot'the machine. Said shaft K is driven by a spur-wheel K2, intermeshin gwith the gear-wheels D', heretofore described. The cam or wiper K is solocated and actuated as to strike the arms I I of the bending-levers andthrow said bending-levers upwardly into a vertical position after theinward movement of the carriage B has ceased. lVhen said carriage hascompleted its inward movement and twists have been formed in the blankby the action ot' the cam-arms II Il and forming-dies G G, ashereinbetorc described, the ilat parts of the hanger will be held by thesaid cam-arms, the top plate, the formblock, and the rollers E E inposition parallel with each other, with their ilat sides horizontal andprojecting outwardly from beneath the top plate, their ends at this timestanding over the surfaces 11 t" of the bending-levers. .Vhen saidbending-levers are thrown upwardly, therefore, they will actupon t-heends of the blank, to bend the same upwardly and bring them into contactwith the ilat vertical faces A A ot the opposing dies in an obviousmanner. By the movement of the bending-levers in the manner described,the right-angled bends a3 a3 will be formed.

The iinal movement by which the bends a4 a" are made is accomplished bymeans as tollows: The bending-arms JJ are connected by pivots j j withthe bending-levers I I, and said bending-arms are adapted to swing uponthe said pivots in such manner that they may be placed either at rightangles to the levers or thrown outwardly at an angle. thereto and intothe position shown in Fig. l. During the upward movement of thebending-levers I I the said arms J J stand at an angle to the arms, asshown in Fig. l; but when said bending-levers are near the end ot theirmovement said arms J J are thrust downwardly into position at rightangles to the bendinglevers and above and parallel with the top surfacesAl' A? of the dies, so as to bring the extreme ends of the blank againstthe said top surfaces.

The movement of the arms J J in the manner described is accomplished bymeans as follows: L L are levers pivoted at points between their ends,by means of pivot-pins Z, to laterally-projecting lugs 'if i3 on thelevers I. Said levers L are connected with the free ends of the arms Jby means of links` L. Springs Z2 are applied to throw the outer ends ofthe levers L L away from the bending-levers I I, so as to hold the armsJ J normally outward or at an angle with the bending-levers, thisposition of the parts being shown in Fig. l. M is a horizontal barmounted upon standards M M at a considerable distance above the topplate A2 of the machine, said bar M being so located that it will beencountered by the outer ends of the levers yL L when the bending-leversI I are swung upwardly into a vertical position. The said bar M isdisposed in such position relatively to the said levers L L that saidlevers will strike the bar shortly before the bending-levers I I reachtheir vertical position, so that said levers L will be actuated tothrust the bending-arms J J downwardly during the last part of themovement of the said bending-levers, and so as to bring the said arms JJ into a horizontal position at the termination of the movement ot' saidbending-levers.

It follows from the construction described that when the bending-leversI I are thrown upwardly by the action of the cam or wiper K both ot' theright-angled bonds d3 d, torming the hooks, will be automatically made.

After the bending of the blank has been accomplished inthe manner abovedescribed, the wiper K will pass the arms I I of the bending-levers I I,thereby allowing the said bending-levers to fall in the horizontalposition shown in Fig. l, after which the return movement of thecarriage will take place, allowing the cam-arms II II to fall into avertical position, and thereby releasing the iinished hanger, which atthe termination of the forward movement of the carriage may be liftedfrom the form-block after the die G G IOO have been turned or moved tofree the hanger, inthe mannerherei nbefore described.

In order to enable the machine to be adjusted for making the distancebetween the bends a3 c4 greater or less, and thereby making the hookswider or narrower, the parts are constructed as follows: The lugs i2ft2, instead of being permanently secured to the levers I I, areconnected therewith by means of bolts 'i3 th, and the levers areprovided with additional bolt-holes, as fi, and one or more additionalapertures i5 are provided for receiving' the pivotsjj of the arms JJ. Bythe construction described the said hooks may be made of asmanydiiiferent widths as there are sets of bolt holes and apertures forsecuring the lugs t2 and pivots jj to the bending'- arms. lVhen theposition of the bendingarms J J is changed in the manner described,

it is obviously necessary to change the width of the vertical faces AGA, over which the ends of the blank are bent. For this purpose saidsurfaces AG AG are formed on or by removable die-blocks AS A2, held inplace by the bolts A9, which enter and engage the T- grooves A3 of thetop plate A2, Fig. 15. lVhen the said bendingarmsJ J and leversL L areshifted in position in the manner described, it is further necessary tochange the vertical position of the bar M, and for this purpose said baris held at its ends in the vertical slots m lm by means of clamp-nuts mm', which maybe loosened to allow the bar to be shifted vertically. Inorder to provide an accurate adjustment of the parts, so that thebending-arms J J may be moved to exactly the right extent, the bar Misf'pieferably provided with eccentric ends or trunnions m2 m2, engagingthe slots m m, so that by turning the bar its part or surface whichstrikes the levers L L may be shifted back or forth desired. 1

In order to hold the ends of the blank accurately in vertical positionduring the time they are being bent upwardly by the action of thebending-levers, vertical guide-surfaces are located at the oppositesides of the worki iig-faces AVIAG in such the-side edges of the blanks,said guide-surfaces bein g arranged at a distance apart equal to thewidth of the blank. The guides for the outer edges of the blank areherein shown as formed by the inner surfaces of the blocks E2 E2whichsupport the rollers E E. Said Vinner faces of the blanks are of courselocated vertically in alignment with the inner surfaces of the saidrollers E E, it obviously being necessary that the said guidesurfacesshould be located the same distance from the vertical side faces of theform-block as the said rollers-t0 wit, a distance equal to the width ofthe blank. The guide-surfaces for the inner edges of the blank areformed by the side of the projection or guide-block N, Figs. 2, 3, 4,and 15, which is preferably made separate from the top plate and securedto the said top plate between the said surpositionV as to engage' facesAG AG, the side faces of the said block being" dcsirably curved orrounded in the manner shown. When the form of movable forming-dies G Gshown in Figs. 18, 19, 20, and 2l is used, said projection N will bemade of wedge shape and pointed at its lower part, so as to enterbetween and open the dies, as hereinbefore set forth.

In order to provide for making hangers having central loops of differentwidths, it is obviousl y necessary that the projection or guideblock Nshould be changed to correspond in width with the form-block I3', andwhen the said form-block is changed or when a wider or narrower blank isused it is necessary that the external guide surfaces formed by theblocks E2 E2 should also be moved. I provide for change in the Width ofthe guide@ blockN by'making said block detachable, the same beingsecured in place,as herein shown, Fig. 3, by means of a bolt passingthrough the block and having a head at its inner end which engages theT-groove As of the top plate A2. Said guideeblock can therefore beremoved and a wider or narrower one substituted, as may be necessary ordesirable. rlhe external guide-surfaces formed by the blocks E2 E2 willof course come in proper position for engagement with the said edges ofthe blank when the rollers E E are placed at a proper distance from theform-block to also engage the external side edges of the blank in themanner heretofore described.

In operating upon blanks of different thicknesses it is obviouslynecessary to shift the rollers E E toward and from the form-block, andfor this purpose I adjustabl y secure the studs e e of said rollers intransverse slots c a in the top plate A2, Fig. 4, and in order to enablesaid studs to be easily shifted, a screw-shaft ai is inserted throughthe top plate and provided with oppositely-directed screw-threadsengaging the said studs, said shaft having a squared end at one side ofthe top plate by which it may be turned by the application of a suitabletool.

It is obviously desirable that means should 'be'provided for accuratelydetermining the position of the straight blank when putting the same inthe machine, so that the ends of the same will come in proper positionafter the blank is bent. For this purpose I attach to the sides of theframe two outwardly-extending horizontal arms O O, Fig. 4, and placeupon the same two adjustable gages 0 0, which extend vertically upwardin position to engage the ends of the straight blank when the latter isplaced across the rear end of the form-block in the manner hereinbeforede scribed. The position of the said blank when placed in the machine isindicated in full lines in said Fig, 4.

I claim as my invention- 1. The combination, with a reciprocatingform-block, of two stationary bending-rolls located at opposite sides ofthe formlblock and two other bending-rolls located at oppo- IOO IIO

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site sides of the formblock and at a distance therefrom equal to thethickness of the bar to be bent, substantially as described.

2. The combination, with a reciprocating form-block, a movable carriagesupporting the latter, and bending-rollers located at opposite sides ofthe form -bloek, of tormingdies mounted upon the part of the form-blockremote from the carriage and movably connected with said form-block, andmeans upon the carriage acting in connection with said forming-dies togive a twisted form to the blank, substantially as described.

The combination, with a reciprocating for1nblock,a movable carriagesupporting the latter, and bending-rollers located at opposite sides ofthe form-block, of two forming-dies mounted upon the part of theform-block remote from the carriage and extending later- `ally atopposite sides of the form-block, said forming-dies heilig pivotallyconnected with the form-block, and means upon the carriage acting inconnection with said forming-dies to give a twisted form to the blank,substantially as described.

a. The combination, with a reciprocating carriage and a form-blockthereon, of stationary binding-rollers, forming-dies mounted on theform-block and extending laterally from opposite sides thereof, andcam-arms pivotally supported upon the carriage and operating inconnection with the said forming-dies to give a twisted form totheblank, substantially as described.

5. The combination, with a reciprocating carriage, a form-block thereon,and stationary beiiding-rollers, of forming-dies mounted on the blockand extending later-ally at opposite sides thereof, cam-arms mounted onthe carriage and operating in connection with the said forming-dies togive a twisted form to the blank, and a stationary part or rolleradapted for contact with the said cam-arms, by which the latter areactuated during the movement of the carriage, substantially asdescribed.

6. The combination, with a form-block and bending-rollers operatinginconnection therewith to make a central bend or loop in the blank, offorming-dies mounted on the formblock and extending laterally fromopposite sides thereof, cam-arrns operating in connection with saidforming-dies to give a twisted form to the blank, bending-levers pivotedto the ends of said cam-arms, and stationary surfaces or dies opposed tosaid bending-levers, substantially as described.

7. The combination,with a form-block and bending-rollers operating inconnection therewith to make a central bend or loop in the blank, offorming-dies mounted on the forinblock and extending laterally fromopposite sides thereof, cam-arms operating in connection with saidforming-dies to give a twisted form to the blank, bendingdevers pivotedto the ends of said cam-arms,bending-arms pivoted to the saidbending-levers, and stationary surfaces or dies opposed to saidbendinglevers. substantially as described.

8. The combination of a form-block, bending rollers operating inconnection therewith to make a central bend or loop in the blank,forming-dies mounted on the forinblock and extending laterally fromopposite sides thereof, cam-arms operating in connection with saidforming-dies to givea twisted form to the blank, bending-levers pivotedto the ends of said cam-arms, and a revolving cam or wiper for actuatingsaid bending-levers, substantially as described.

O. The combination of a reciprocating earriage, a form-block mountedthereon, stationary bending-rollers operating' in connection with theform-block to make a central loop in the blank, forming-dies mountedupon the form-block and extending laterally at opposite sides thereof,cam-arms mounted upon the carriage and operatingin connection with saidforming-dies to give a twisted form to the blank, stationary parts orrollers foractuating said cam-arms, bending-levers pivoted to the endsof said cam-arms, and a revolving cam-or wiper actuating saidbending-levers, substantially as described.

10. rlhe combination of a reciprocating carriage, a for1n block mountedthereon, stationary bending-rollers operating in connection with thefornrblock to make a central loopin the blank, forming'dies mounted uponthe form-block and extending laterally at opposite sides thereof,cam-arms mounted upon the carriage and operatingin connection with saidforming-dies to give a twisted form to the blank, stationary parts orrollers for actuating said cam-arins, bending-levers pivoted to the endof said cam-arms, a revolving cam or wiper actuating saidbending-levers, bending-arms pivoted to the outer parts of said ben ding-levers, actuating-levers pivoted upon the bending-levers and connectedwith the said bending-arms, and a stationary part or barupon themachine-frame adapted for contact with said actuating-levers, wherebythe said bending-arms are moved, substantially as described.

ll. The combination, with a reciprocating carriage and a form-blockmounted thereon, of stationary bending-rollers located at opposite sidesof the torm-block at a distance therefrom equal to the thickness of theblank, forming-dies mounted upon the form-block and extending laterallyfrom opposite sides thereof, cam-arms pivoted to the carriage andoperating in connection with said formingdics to give a twisted form tothe blank, and other stationary bending-rollers located at 0ppositesides of the form-block at a distance therefrom equal to the width ofthe blank, substantially as described.

19. The combination, with a reciprocating carriage and a form-blockmounted thereon, of stationary bending-rollers located at opposite sidesof the form-block at a distance therefrom equa-l to the thickness of theblank,

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forming-dies mounted upon the form-block and extending laterally fromopposite sides thereof, cam-arms pivoted to the carriage and operatingin connection with said formingdies to givea twisted form to thebla-nk,othcr stationary bending-rollers located at opposite sides oftheform-block at a distance therefrom equal to the width ot' the blank, andbending-levers pivoted to the ends of the cam-arms, substantially asdescribed.

13. The combination, with a reciprocating form-block and bending-rollersoperating in connection therewith to form a central loop in the blank,of a clamping device for holding the blank against the end of theforni-block, a lever for actuating said clamping device, and astationary part of or upon the machine-frame adapted for engagement withsaid lever during the reciprocatory movement of the block, whereby theclamp is autolnatical ly actuated, su bstantiallyas described.

14. The combination, with a reciprocatingq form-block andbending-rollers operating in connection therewith to form a central loopin the blank, of clamping device for holding the blank against the endof the form-block, a lever for actuating said clamping device, and astationary part of or upon the machine-frame adapted for engagement withsaid lever during the reciprocatory movement o1" the block, whereby theclamp is automatically actuated, and a spring for releasing the clamp,substantially as describef.

15. The combination of a reciprocating form-block, bending-rollersoperating in connection therewith, forming-dies mounted on and extendinglaterally from opposite sides of the form-block, and cam-arms operatingin connection with said forming-dies, said forming-dies beingniovablyconnected with the form-block, and a stationary part of or uponthe machine-frame engaging said formingdies or a part connectedtherewith during the reciprocation of the form-block, whereby saidformingdies are moved or shifted into op- 'erative position,substantially as described.

1G. The combination,with a machine-frame, a reciprocating form-block,and bending-rollers operating in connection therewith, of forming-diespivotally connected with the form-block,.cam-arms operating inconnection with said forming-dies to give a twisted form to the blank,an actuating-lever connected With said forming-dies, and a part of orupon the machine-frame adapted to engage said actuating-lever to movethe forming-dies during the reciprocation of the form-block,substantially as described.

In testimony that I claim the foregoing as my invention I affix mysignature in presence of two witnesses.

JOHN GRANT.

Vitnesses:

C. CLARENCE POOLE, GEORGE W. HIGGINS, Jr.

